MICROWAVE SWITCH Russian patent published in 1997 - IPC

FIELD: microwave engineering; microwave signal switching devices. SUBSTANCE: microwave switch has input and output 3-dB quadrature bridges 1 and 2 each provided with first and second inputs and first and second outputs; inserted between first output and input of first and second bridges 1 and 2, respectively, as well as between second output and input of input and output bridges are first and second phase shifters 3 and 4, respectively, changed over in steps by means of p-i-n diodes 5; first phase shifter can be changed over from 180 deg to 0 and incorporates control circuits 6 for p-i-n diodes; second phase shifter can be changed over from 180 deg to 0 and both phase shifters can simultaneously drive in conduction all p-i-n diodes for fast changing from 180 deg to 0; control circuits of p-i-n diodes of phase shifters can cut off all p-i-n diodes of both phase shifters during intervals between information messages. EFFECT: provision for fast single-shot switching of signal from one output to other and back. 4 cl, 6 dwg